JPH077308Y2 - Hood damper opening / closing device for coke oven dust collector - Google Patents

Description

[Detailed Description of the Invention] <Industrial field of application> The present invention is a coke oven dust collector that collects dust-containing gas generated on the side of a coke guide car during the firing operation of a coke oven in which many kilns are arranged in a row. The present invention relates to a hood damper opening / closing device.

<Prior Art> Generally, in a coke oven, coal is charged into each kiln provided in the coke oven by a coal car, and after the carbon is distilled for a certain period of time in the kiln, the coke is extruded to the front side of the oven by an extruder. The work of producing coke is carried out by putting out the kiln, putting the red-hot coke into a fire engine through a coke guide car, and then extinguishing the fire.

Since this furnace work is performed sequentially in many kilns arranged, it becomes almost continuous work, and dust-containing gas is constantly generated during this work, but especially during the coke firing operation, a larger amount of dust-containing gas is generated. Occur. The dust-containing gas during the coke firing operation is collected by the dust collection hood.

By the way, a 2-point type coke guide car is equipped with a door lifter of the coke oven and a coke guideway that guides the coke pushed out of the kiln to the fire extinguisher by several kilns. Therefore, removing the lid → pushing out the coke → attaching the lid It is necessary to shift the coke guide car at each stage of.

Originally, it is preferable to remove dust from the oven lid, push out the coke, and attach the lid over the entire kiln, but it is necessary to shift the coke guide car as described above. There is a drawback that dust is collected only during the coke extrusion operation that matches the core, and dust cannot be collected when the furnace lid is removed or attached.

As a solution to the above drawbacks, Japanese Patent Laid-Open No. 51-49202 collects dust-containing gas generated from the time when the coke oven lid is removed to the time when the coke pushing operation is completed and the oven lid is installed. Means have been proposed.

That is, the above means collects dust-containing gas generated when the coke is pushed from the coke oven through the coke guide wheel to the fire extinguisher with a dust collecting hood arranged so as to cover the top of the fire extinguisher,
In addition, suction is performed from the connection port of the dust collecting hood to the dust collector via the suction duct.

At the same time, a coke guide car is provided with a furnace opening hood that covers the outside of the furnace opening of the coke oven at the time of removing and installing the furnace lid by this lid removing machine, and the connection opening of this furnace opening hood is adjacent to the connection opening of the dust collecting hood. The suction port opening / closing mechanism of the suction duct is provided at the connection port of the furnace hood.

The suction port lid opening / closing mechanism of the furnace port hood connection port opens and closes the suction port lid to start collecting dust when the coke oven furnace lid is removed, and when the coke guide car shifts, a plurality of (for example, 4
The suction port of each suction duct sequentially moves from the furnace hood connection port to the dust collection hood connection port. By doing so, it is possible to remove the dust-containing gas generated between the time when the furnace lid is removed and the time when the kiln removal work is completed.

Further, Japanese Utility Model Laid-Open No. 59-33746 discloses a coke oven dust collector shown in FIG.

In the example shown in FIG. 5, the hood damper 11 is opened and closed by the damper drive cylinder 14 installed on the coke guide vehicle 2 on the dust collecting hood 10 arranged in line above the kiln exit end of the coke oven 1. Dust collection duct connected to the dust collection hood 10
A bracket 16 is projectingly provided on the bracket 12, and a damper opening / closing lever holding hook 17 is pivotally attached to the bracket 16 by a pin 18 at its upper end and hung down. The damper opening / closing lever 13 is held in the damper releasing position by engaging with the engaging rod or the projection 20 on the damper opening / closing lever 13 in the releasing position 13 '.

As a means for removing the engagement between the damper opening / closing lever 13 and the holding hook 17, a releasing cylinder 22 is fixedly mounted on a column 21 provided on the coke guide wheel 2, and a rod 23 of the cylinder 22 is extended to extend the holding hook. 17 is pushed out from the engaging position shown by the solid line to the releasing position shown by the chain line. In order to ensure the operation of the retaining hook 17,
24 are provided.

<Problems to be Solved by the Invention> However, the means proposed by the above-mentioned Japanese Patent Laid-Open No. 51-49202 requires two sets of connection ports, a dust collection hood connection port and a furnace port hood connection port. Therefore, the load of the fixed suction duct is increased, the resistance when the coke guide vehicle travels is increased, and the equipment is complicated and large-scaled, resulting in an increase in equipment cost.

Further, the means proposed by Japanese Utility Model Laid-Open No. 59-33746 is a release cylinder 22 for rotating a holding hook 17 back and forth in addition to an open / close cylinder 14 for opening / closing a damper open / close lever 13.
In addition to the above, there is a problem that the mechanism for engaging and disengaging the damper opening / closing lever 13 and the holding hook 17 provided with the spring 4 is complicated and prone to malfunction, and the operation is complicated.

The present invention solves the above-mentioned problems of the prior art, and provides a hood damper opening / closing device for a coke oven dust collecting device which has a simple structure and is capable of collecting dust over the entire working process at the time of removing the furnace lid and pushing out the coke. The purpose is.

<Means for Solving the Problems> The present invention for achieving the above object is a coke in which a dust collection duct is connected via a hood damper to each dust collection hood lined up above the kiln exit end of a coke oven. In the hood damper opening / closing device of the furnace dust collector, the hood damper opening / closing mechanism is installed on the coke oven side by connecting to the opening / closing lever of the hood damper, and the rear end of the operation rod incorporated in the hood damper opening / closing mechanism is excited. While attaching the iron piece, at the top of the coke guide car, when the door lifter of the coke guide car coincides with the core of the extrusion kiln and stops, the rod tip portion is located at a position facing the exciting iron piece of the operation rod installed on the coke oven side. It is characterized in that a damper opening / closing cylinder having an electromagnet attached thereto is installed.

In the present invention, as a hood damper opening / closing mechanism, a damper driving cylinder is connected to the hood damper via an opening / closing lever, and a lever-operated electromagnetic switching valve for opening / closing the opening / closing cylinder is installed on the coke oven side. In addition to installing an operation rod for switching and operating the lever of the operation type solenoid operated directional control valve, an operation iron rod is attached to the rear end of the operation rod, or the operation rod is installed by connecting to the opening / closing lever of the hood damper. It is possible to use a magnet having an exciting iron piece attached to the rear end of the operating rod.

<Operation> After the coke guide car is stopped by the door lifter matching the core of the extrusion kiln, when the coke kiln of the coke oven is taken out, the damper opening / closing cylinder installed in the coke guide car is operated forward and installed on the coke oven side. By pressing the operation rod, the hood damper is switched from closed to open, and the dust-containing gas generated when the kiln is taken out is introduced into the dust collection duct through the dust collection hood above the exit end of the coke oven to collect dust.

When the coke kiln removal is completed, the damper opening / closing cylinder on the coke guide vehicle is moved forward again to the position of the operating rod on the coke oven side, and the electromagnet built into the rod tip of the damper opening / closing cylinder is excited to move the operating rod After adsorbing the exciting iron piece attached to the rear end portion, the hood damper is switched from open to closed by retracting the damper opening / closing cylinder together with the operation rod, and the dust collection from the dust collecting hood is completed.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings. Second
In FIG. 3 and FIG. 3, 1 is a coke oven, and 2 is a coke guide vehicle that moves along the front deck 3 by rails 4 on the front deck 3. The coke guide wheel 2 includes a door lifter 6 for detaching a furnace lid 5 attached to the kiln outlet of the coke oven 1 and a coke guideway 7 for guiding the coke extruded from the coke oven 1 to a fire engine (not shown). Equipped with several kilns apart.

In order to collect the dust-containing gas generated when the coke in the coke oven 1 is discharged from the kiln, a dust collection hood 10 is provided in a row above each of the kiln outlet ends of the coke oven 1, and each dust collection The hood 10 is connected to a dust collecting duct 12 via a hood damper 11.

FIG. 1 is a detailed view of part A in FIG. 2, and shows an example of the configuration of the hood damper opening / closing device. In FIG. 1, a hood damper 11 is connected to a damper driving cylinder 14 via a damper shaft 8 and an opening / closing lever 13. A lever-operated switching valve 9 is installed in pair with the damper driving cylinder 14, and the damper driving cylinder 14 and the switching valve 9 are connected by a pipe 15. By switching the switching valve 9, The damper driving cylinder 14 is adapted to expand and contract.

A pair of claws fitted to the tip roller 9b of the lever 9a of the switching valve 9
A switching valve operating rod 30 having 30a is supported by a bearing 30b, and an exciting iron piece 31 is attached to a rear end portion of the operating rod 30.

One set of the above components is provided for each hood damper 11 corresponding to each kiln outlet, and these are supported by a dust collection duct 12 or a support frame (not shown) fixed to the coke oven side of the coke oven 1 or the like. ing.

On the other hand, an electromagnet is attached to the tip of the rod 32 at the top of the guide wheel 2.
A damper opening / closing cylinder 34 to which 33 is attached is installed, and its attachment position is such that when the door lifter 6 of the coke guide vehicle 2 is aligned with the core of the extrusion kiln and stopped, the damper switching valve operation rod 30 at the kiln outlet is installed. It is arranged so as to face the exciting iron piece 31 attached to the rear end of the. In order to avoid interference when the coke guide vehicle 2 travels, it is necessary to secure a space S ₁ of about 100 to 200 mm between the electromagnet 33 and the exciting iron piece 31 when the damper opening / closing cylinder 34 is retracted. is there.

Next, the operation of the present embodiment will be described in accordance with the kiln-extracting step of extruding the red hot coke from the kiln in which the dry distillation of the coke oven 1 is completed.

First, the coke guide wheel 2 is stopped at a position matching the core of the exit of the extrusion kiln in order to remove the furnace lid 5. Subsequently, when the damper opening / closing cylinder 34 on the upper portion of the coke guide wheel 2 is operated to move the rod 32 forward to push in the operation rod 30, the pawl 30a causes the lever 9a of the switching valve 9 to rotate from the solid line position to the dotted line position. The pipe 15 is switched to the circuit side for advancing the damper drive cylinder 14. Therefore, the hood damper 11 is changed from the closed state to the open state by the forward drive of the damper drive cylinder 14.

The damper opening / closing cylinder 34 is immediately retracted after the operation rod 30 is completely pushed in, but the operation rod 30 remains stationary in the pushed-in position, and the hood damper 11 is maintained in the open state. In parallel with the opening process of the hood damper 11, a dust collector (not shown) connected to the dust collection duct 12 is switched from low speed operation to high speed operation by a command signal from the coke guide vehicle 2.

When the dust hood above the exit of the extrusion kiln is in a suction state by the above operation, the furnace lid 5 is removed by the door lifter 6,
The dust-containing gas rising from the kiln outlet of the coke oven 1 is sucked into the dust collecting hood 10 and collected. Next, the coke guide vehicle 2 guides the extruded coke to the fire extinguisher vehicle by using the guide way
Shift the core to the position that matches the extrusion kiln core. Subsequently, coke in the coke oven 1 is extruded by an extruder (not shown). During this time, the hood damper 11 above the kiln exit
Is released, and the upward flow of dust-containing gas from the coke passing through the guideway 7 is sucked by the dust collection hood to collect dust.

After the coke is pushed out, the coke guide wheel 2 shifts the door lifter 6 core again to a position that matches the extrusion kiln core, attaches the furnace lid 5 and at the same time issues a low speed command to the dust collector to return to low speed operation.

At this point, the damper opening / closing cylinder 34 is advanced again,
When the forward end is reached, by exciting the electromagnet 33 attached to the tip of the cylinder rod 32, the exciting iron piece 31 attached to the rear end of the operation rod 30 is brought into an attracting state. In this state, retract the damper opening / closing cylinder to move the operating rod 30
Is pulled back, the switching valve 9 is switched to the retract circuit of the damper drive cylinder 14, and the hood damper 11 is closed.
By providing the operation rod 30 with a stopper function according to the stroke S ₂ of the lever 9a of the switching valve 9, excessive pushing and pulling back can be prevented.

In the above-described embodiment, the method of operating by interposing the switching valve 9 in addition to providing the damper driving cylinder 14 for driving the hood damper 11 and the damper opening / closing cylinder 34 has been described. In the case of a damper, as shown in FIG. 4, the tip of the operating rod 30 may be directly connected to the opening / closing lever 13 and the hood damper may be opened / closed according to the procedure according to the above embodiment.

<Effects of the Invention> As described above, according to the present invention, the operation rod can be pulled back with a simple structure in which only an electromagnet is added to the hood damper opening / closing cylinder, which is economical. Moreover, not only the stop position error and the level error of the coke guide car can be absorbed by the connection of the electromagnet and the exciting iron piece, but also the dust can be collected in the entire coke extrusion process in the two-point type coke guide car, which is an environmental improvement effect. Is huge.

[Brief description of drawings]

FIG. 1 is a diagrammatic side view showing an embodiment of the present invention (details of section A in FIG. 2), FIG. 2 is a schematic side view showing the overall arrangement of the present invention, and FIG. 3 is the whole of the present invention. FIG. 4 is a schematic front view showing the arrangement, FIG. 4 is a schematic side view showing another embodiment of the present invention, and FIG.
The figure is a schematic side view showing a conventional example. 1 ... Coke oven, 2 ... Coke guide wheel, 5 ... Furnace lid, 6 ...
Door lifter, 7 ... Guideway, 9 ... Lever operation type switching valve, 10 ... Dust collection hood, 11 ... Hood damper, 12 ... Dust collection duct, 13 ... Opening lever, 14 ... Damper drive cylinder, 30 ... Operation rod, 31 ... Excitation iron piece, 32 ... Rod, 33 ... Electromagnet, 34
… Cylinder for opening and closing the damper.

Claims (3)

[Scope of utility model registration request] 1. A hood damper opening / closing device of a coke oven dust collector in which a dust collecting duct is connected to each dust collecting hood arranged in a row above a kiln exit end of a coke oven through a hood damper. The hood damper opening / closing mechanism is installed on the coke oven side by connecting to the opening / closing lever, and the exciting iron piece is attached to the rear end of the operation rod incorporated in the hood damper opening / closing mechanism, while the coke guiding vehicle is installed on the upper part of the coke guiding vehicle. A damper opening / closing cylinder having an electromagnet attached to the rod tip is installed at a position facing the exciting iron piece of the operating rod installed on the coke oven side when the door lifter of the rod stops at the core of the extrusion kiln. A hood damper opening / closing device for a coke oven dust collector. 2. A hood damper is connected to a damper driving cylinder via an opening / closing lever, and a lever-operated electromagnetic switching valve for opening / closing the driving cylinder is installed on the coke oven side, and said lever-operated electromagnetic switching valve. A hood damper opening / closing device for a coke oven dust collector according to claim 1, wherein an operating rod for switching the lever is installed, and an exciting iron piece is attached to a rear end portion of the operating rod. 3. An operating rod is connected to an opening / closing lever of a hood damper, and an exciting iron piece is attached to a rear end portion of the operating rod.
Hood damper opening / closing device for the coke oven dust collector described.